well, the jt stealth is a dead simple spyder type of marker.unfortunately lots of proprietary things are part of it. firs off a barrel is in order, standard spyder thread. second if you want a different grip you need to tap the air fitting for standard braided hose to get a new asa on it because the asa is part of the grip and the hose is nonstandard thread. I cut the channel that the cocking pin goes in all the way through the back so you could load first strike rounds through the back of the breach. This is what i did with mine:
it could also be made into a pistol, it is super light, lighter than pistols like the Zeus or Delta 68